Works on EWMH: add _NET_WM_STATE_FULLSCREEN management

src/client.c

@@ -982,9 +982,10 @@ client_moveresize(struct client *c, struct geo *g)
                        c->rgeo.x, c->rgeo.y,
                        c->rgeo.w, c->rgeo.h);
 
-     XMoveResizeWindow(W->dpy, c->win,
-                       c->wgeo.x, c->wgeo.y,
-                       c->wgeo.w, c->wgeo.h);
+     if(!(c->flags & CLIENT_FULLSCREEN))
+          XMoveResizeWindow(W->dpy, c->win,
+                            c->wgeo.x, c->wgeo.y,
+                            c->wgeo.w, c->wgeo.h);
 
      c->flags &= ~CLIENT_DID_WINSIZE;
 

src/client.h

@@ -102,6 +102,7 @@ client_map(struct client *c)
      if(!(c->flags & CLIENT_MAPPED))
      {
           WIN_STATE(c->frame, Map);
+          WIN_STATE(c->win, Map);
           ewmh_set_wm_state(c->win, NormalState);
           c->flags ^= CLIENT_MAPPED;
      }
@@ -113,6 +114,7 @@ client_unmap(struct client *c)
      if(c->flags & CLIENT_MAPPED)
      {
           WIN_STATE(c->frame, Unmap);
+          WIN_STATE(c->win, Unmap);
           ewmh_set_wm_state(c->win, IconicState);
           c->flags ^= CLIENT_MAPPED;
      }

src/event.c

@@ -59,9 +59,29 @@ event_enternotify(XEvent *e)
 static void
 event_clientmessageevent(XEvent *e)
 {
-     (void)e;
-     /*  XClientMessageEvent *ev = &e->xclient;
-         client *c;*/
+     XClientMessageEvent *ev = &e->xclient;
+     struct client *c;
+     int type = 0;
+
+     while(type < net_last && W->net_atom[type] != ev->message_type)
+          ++type;
+
+     switch(type)
+     {
+          /* _NET_WM_STATE */
+          case net_wm_state:
+               if((c = client_gb_win(ev->window)))
+                    ewmh_manage_state(ev->data.l, c);
+               break;
+          /* _NET_CLOSE_WINDOW */
+          case net_close_window:
+               if((c = client_gb_win(ev->window)))
+                    client_close(c);
+               break;
+          /* _NET_WM_DESKTOP */
+          case net_wm_desktop:
+               break;
+     }
 }
 
 static void

src/ewmh.c

@@ -6,6 +6,12 @@
 #include "ewmh.h"
 #include "util.h"
 #include "screen.h"
+#include "client.h"
+
+/* Taken From standards.freedesktop.org */
+#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
+#define _NET_WM_STATE_ADD    1 /* add/set property */
+#define _NET_WM_STATE_TOGGLE 2 /* toggle property  */
 
 void
 ewmh_init(void)
@@ -112,10 +118,11 @@ ewmh_update_wmfs_props(void)
 
      cts = xcalloc(ns, sizeof(long));
 
+
      for(i = 0; i < ns; ++i)
      {
           s = screen_gb_id(i);
-          cts[i] = s->seltag->id;
+          cts[i] = (s->seltag ? s->seltag->id : 0);
      }
 
      XChangeProperty(W->dpy, W->root, W->net_atom[wmfs_current_tag], XA_CARDINAL, 32,
@@ -128,3 +135,32 @@ ewmh_update_wmfs_props(void)
      free(cts);
 }
 
+void
+ewmh_manage_state(long data[], struct client *c)
+{
+     /* _NET_WM_STATE_FULLSCREEN */
+     if(data[1] == (long)W->net_atom[net_wm_state_fullscreen])
+     {
+          if(data[0] == _NET_WM_STATE_ADD
+             || (data[0] == _NET_WM_STATE_TOGGLE && !(c->flags & CLIENT_FULLSCREEN)))
+          {
+               c->flags |= CLIENT_FULLSCREEN;
+
+               XReparentWindow(W->dpy, c->win, W->root, c->screen->geo.x, c->screen->geo.y);
+               XResizeWindow(W->dpy, c->win, c->screen->geo.w, c->screen->geo.h);
+
+               client_focus(c);
+
+               XRaiseWindow(W->dpy, c->win);
+          }
+          else if(data[0] == _NET_WM_STATE_REMOVE
+                  || (data[0] == _NET_WM_STATE_TOGGLE && c->flags & CLIENT_FULLSCREEN))
+          {
+               c->flags &= ~CLIENT_FULLSCREEN;
+
+               XReparentWindow(W->dpy, c->win, c->frame, c->wgeo.x, c->wgeo.y);
+               client_moveresize(c, &c->geo);
+          }
+     }
+}
+

src/ewmh.h

@@ -75,5 +75,6 @@ enum
 void ewmh_init(void);
 void ewmh_set_wm_state(Window w, int state);
 void ewmh_update_wmfs_props(void);
+void ewmh_manage_state(long data[], struct client *c);
 
 #endif /* EWMH_H */

src/wmfs.h

@@ -166,6 +166,7 @@ struct client
 #define CLIENT_DYING         0x100 /* Saddest flag ever */
 #define CLIENT_REMOVEALL     0x200
 #define CLIENT_MAPPED        0x400
+#define CLIENT_FULLSCREEN    0x800
      Flags flags;
      Window win, frame, tmp;
      SLIST_ENTRY(client) next;   /* Global list */